public void AnInvoiceIsCorrectlyAddedToClubMember()
        {
            clubMemberDataManager.MemberIDSequenceNumber = 5;
            ClubMember clubMember = new ClubMember("Francisco", "Gomez-Caldito", "Viseas");
            Assert.AreEqual(0, clubMember.InvoicesList.Count);

            InvoiceCustomerData invoiceCustomerData = new InvoiceCustomerData(clubMember);
            Invoice invoice = new Invoice(
                new InvoiceCustomerData(clubMember),
                new List<Transaction>() { new Transaction("Kajak Rent", 1, 50, new Tax("No Tax", 0), 0) },
                DateTime.Now);
            clubMember.AddInvoice(invoice);
            Assert.IsNotNull(clubMember.InvoicesList[invoice.InvoiceID]);
        }
 public void AddInvoiceToClubMember(Invoice invoice, ClubMember debtor)
 {
     debtor.AddInvoice(invoice);
 }